Block-signaling system.



No. 369,275. PATENTED 00129. 19m.-

L'. H. THULLEN.

BLOCK SIGNALING SYSTEM, APPLICATION FILED MAY 15, 1907.

2 SHEETS-SHEET 1.

No; 869,275. PATENTED OUT. 29. 1907. L. H. THULLEN.

BLOCK SIGNALING SYSTEM APPLIOATION FILED MAY 15, 1907.

. 2 SHEETS-SHEET 2.

WITNESSES INVENTOR Toali it-may concern:

LQi IIJSHL Tum-EMF swisstm, rENNs' I i gmwhprire sYs'TE iu; p

' Beitknown-thzit L, Lbors H ijTrr uttiw, of Swis svale,

5 Allegheny county,lPennsylvsni a, have invented a. newan'cl useful BlockQSignaling System of-which the i017 lowing is'e' jclezir, and eiiact description; reference I had tome accompanying drawings, f ormingpnrt oi specification, in which- Fign'rel is a diagram showing my invention'ns applied quencyior a second tra'ck. I

sigimling on esteam railroad,' using'direct* 11 i siniilandialgram as applied to an electric road using direct current for'propulsion purposes; and Figqi 'is-adiagram showing the applicetion of the invention to an current for the track-or signaling circuitry-Fig. 2 is a electric reed in which alternating'current employed for-propulsion purposes, using fcurrent of oneire :quency in one track and a current of different frerailways; and-'frnorepztrticulerly to a. cab and bloclc system wherein the current for the signal operating relay f. in the cab is'obtained by induction jrom a wire or other 'flMyj'ini ntiori d iffersiirom the saidsj rstem; inasmuch conductor-extendingparallel the track. I emf'awure' that a'systein of this general character has heretofore been proposed in which thecurrent for the signal'opsin-theformi'the-Hertzian wa'iies are entirely difiei eritjfr'oin the current-produced by induction, the foriner considered transmissionrof energy by ncans of nidietion; which requires a current of exceedingly 'ne en y; and is. not operative by a current of ordinary frequency; whileiny invention he operajted bya current of-low requency\, and-inject; by -a.f current of radiation;

imyrfumlger of alternations, which is ilnpossible the system which employs Idertzian waves or electrical 1 Referring i 'ri 1}, etnes and B d eSig nete adjacent block sections 44' is'a signnlat the entrance' to the-block 2, and'5 .isasignal at the entrance to theblock 6 is an altematingjcurrent generator which can 155 lli'ivenbyenysuitable source oflenergy, and

' will bethreaded by a mairimum number- 0f lines o p the conductor 7. being controlled by which supplies a .fcircu it Ziwhich includes one of the track rails of the block 3 and a. conductor 7 extendingparallel with and adjacent to the track. fi'desi'gnates'. a locomotive or car hiwing mounted thereon-en induction don $3,111 relay n controlled bylthe circuit oisaid coil, 2. hignalll, and signal lamps 12 controlled hither saidrelayfl'fh circuit 7 extends through a. circuit? breakerl3 controlled by thesig'nal 4. m I

The induction coil 9 consists of a. number of turns on windings on the car in such position that-it force emanating from the conductor-Z, tn 'cini tain resonance corresponding tothe current in the par-1 me e y fl m i v 'Petnte'd; Oct. 29,1907? worked on theclo sed circiiit principle; when the signal is-at clear, the circuit through the conductor 7 is-co'mplete; but when the signal -4 is set at danger;

. v H m s roir j f teatime- 'S iEiAI; QQMPANY, '01: SWISSVALE,PENNSYLVANIA, CORPQRATIONOEPENNSYLVANIAL- this circuit is broken". The current in the coil 9.,i s

operated on the closed circuit principle; that is,

when the conductor 7 'is cai'i'ying current, the relay 10' will operate to close the circuit of the signal l1 and lamps 12; end when no current exists in the conductor broken;

7 the current through the'fsignals 1'1 and l2 be" I do not limit niyself to the use'oi a relay oi any particular character, -itbeing well known that a: relay can.

be constructed which will operete atanyidesired rm q ioncy'in the manner descrih'ed; neither do. Ifliinit' myself to any pzirticulartype ofsignel in the cab; as it apparent that any suitable form of signal ca n'ibe used w to nttmct-thc engineer's nttention. My inyention relates to electric signaling systems for a'pplieclto an' 'clectric road in' which the generator 6 is I driiren by an elect1ic motor 14 which 'innyflerive' its supply from the condu ctor fi {which supplies the prosections. c I

- Fig. 3 shows my invention applied to an electric road The arrangement shown in Fig 2 issirnilar "to-that shown inFig; 1, except that Fig; 2 shows my invention pulsion current; "16 dosigrfiites the bonds for thetrack 8o .ha ying two adjacent .tracks,'eech of which is divided I f into blocks in the samemanr'ier Fig. 2. .17 desig nates a generator forthe propulsion current. 18 is the l9which extendsperallel to the track and corresponds "to the conductor/7 of Figs.- 1 2. 20-is =1 generator which supplies the current for the conductor 21, which" is'in similar relation to the second treck. 22 is a motor for driving the generatorsdBiand 20. On a, two, three or four track road, thecurr entifr the conductors paraL' pertaining to' that track." This I 2ic'complish by 'includ-f generator which supplies the: current iorthe conductor ing in the circuit (if; the induc tion coil 9" of the cars-Q means for maintaining or said'circuits to a' cer-R 7 ticular conductorby which-this particular signal inech with reference to each other thet at'a g'ivenfreqriency they'will Min-resonance; that at givennequency.

a emo'unt-of current will -trdilerse thecircuil nnis'n to be operatedfsuchlrneans rn'ay consist ofl", condensers 23 and adjustable irnpedance goils 24 These condensergendtheimpedance coilsruaybe so zidjusted The latter maybe eitheroverhcad. at the side 1 tion of the induction coils will be changed accordingly, being placed in each case in the best position for chhieie operated by said coil: slibstantially n sidescribed.

- donsers and-impedance coils can be so arranged that by tus (an be tuned for any frequency, and can be readily thus, in 3 I have shown one adjustment on the car 25 of one track, and a diii'erent'adjustment on the car cutting in and out capacity or inductance the apparachanged to be tuned at a. numberpf frequencies. I do not, therefore, restrict myself to any particular arrangement of conductors and impedance coils. itbeing also well,kn o wn that these can be connectcd either in multiple or series, depending upon their size and 333135.6- ity, to accomplish the desired results. nei he'iiiia. I limit myself to any particular location of the induction coils, nor of the conductors eitending. adjacent -to the of the. track; or between theme]: rails, and thetlocataining a maximum induction.

WhatIclaimis:-

1. In a block signaling system, a conductor extending adjacent to the track throughout substantially the length of the' block trom'signal to signal, a. signal-controlled circuit breaker in the circuit of said conductor.- and acoil on the carer othe ehicle in inductive relation to said conductor, and signal mechanism on the carer dther re 2. In a block signaling system. a conductor extending adjacent to the trackway throughout substantially \the length of the block; means for supplying said conductor with alternating current. a block signal, a circuit breaker controlled 'hysaid, signal and controlling the circuit of said conductor. a coil on .a caror other vehicle in inductive relation to the conductor, a relay operated by saidcoil. and signal mechanism controlled by. tlie relay: substnhtially as described. I I i I). in a block signaling apparatus, ,a block signal. a conductor extending adjacent to the trackway and havingits circuit controlled by the signal. a -coil carried by the car or vehicle in inductive relation to said conductor. signal mechanism on the car operated bysuid coil. and means whereby the signal mechanism is controlled only by a current di certain frequency;substantially as de scribed l 4. In a block signaling system. a signal. a conductor extending adjacent to the track-way and having its circuit vehicle in inductive-relation to the conductor,- a r lay operated by said coil, signaiing'mechanism on the car controlled by the signal, a coil carried by the car or other predetermined frequency substantially as described.

-5. in a block signaling system. a closed track circuit. a COIidllC'iOl' extending adjacent to the track, and having its circuit controlled by the track circuit,'a coil on the car or other vehicle in inductive relation to said conductor.

and means for controlling the current in said conductor by the passage'of a train in the block; substantially as described.

ii. in a block signaling system,- a closed track circuit. a conductor extending adjacent to the trackyvay. vand havingits circuit controlled by the track 'circuina coil on the car-or .other.voliicle in inductive relation to he conductor, ahd a relay operated by the'track circuit to control the current in the conductor extending adjacent to the trackway'; substantially as described.

T. In :1 block signaling system. a sigual ,.'1 closed track circuit, a conductor extending adjacent to the trackway and having its circuit controlled by the signal, a coil carried by the car or other ychicle ininductive relation to the conductor. and means for controlling the current in the conductor extending adjacentto. the track'way by means of the track circuit; substantially as'described. Y

1 in a block signaling. system, a signal; a Ci(l.\;" track circuit, "a conductor extending adjacent to the \I'llt'k\\'i'l and lnu'ingits circuit controlled by the signal, a coil carrind by the car 'or other vehicle in inductive relation to the conductor. 11 sighnl mechanism on the cm connected to said coil, and means for adjusting the signal mechanism to be in.tune with the conductorextending adjacent to the trackn'ay; substantially as desc1'ibcd.

9! in a block signalling system, a closedtrnck circuit.-

a conductor-extending adjacent to-tbc track. a'signal circuit on the vehicle. means tor inducing a current in said circuit from the said 'conductor,.and means for n aintaining the resonance of the sigualclrcuit iuaccordn ith the frequency of the current in said conductor: substantially as described. 1 i

10. in block signaling mcohunism'a plurality of tracks. a conductor adjacent to cncli trnckfan electriealiy controlled signal device on each vehicle. and means for iuducing a'curr ut in the circuits of the signals trom'the truck conductors. the said circuits-being cachuuiled with respect to the current in the particularconductor for that .track: substantially as (Ir-scribed. i

in Ivsiiilluily twin-rent. l have hereunto sctniy band. .Lomsu. 'rlu' unnx. 

